Red Cups or Styrofoam?

[bower]

Originally Posted by Father'sDaughter

Get yourself a roll of blue painters tape and use it for labels. It'll peel right off when your done with the pot/cup.

Yeah I've done that too.
Beware the green tape though, it is not so easy to get off after a season of wetting and drying. Some of my old cell packs are held together with it, which is fine, but the label bits are not so easy to remove.

It's certainly true that the standard green hort pots hold up forever. I have over a hundred 4 inch squares I think, from a batch I bought wholesale 15 or 20 years ago, I've only seen damage on a few of them in that time after being reused, washed, left outdoors over winter, the works. The square ones are tougher IMO. Round tends to be subject to crushing. My only gripe with them is the space they take under the lights.